Improvement in doob-eolder



guilt@ ga-1,2% gericht @ffice JOHN K. CLARK, OF MOUNT PLEASANT, IOWA,ASSIGNOR TO I'IIMSELF,CHARLES- B. CLARK. AND HENRY R. CLARK, OF BUFFALO,NEW YORK.

'Letters Patent No. 80,390, dated July 28, 1868.

I IMPROVEMENT IN DOOR-HOLDER.

TO ALL WHOM IT MAY CONCERN:

Be it lcnown that I, JOHN K.` CLARK, of Mount Pleasant, iu the county ofHenry, and State of Iowa, have invented a certain new and improvedDoor-Stop and Holder; and I do hereby declarethat the foilowing is a'full and exact description thereof, 4reference being had to theaccompanying drawings, in which;`

Figure I is a view of my improvement represented as applied to andholding a door open.- Figure II is an elevation of the same, with thedoor in a closed position.

Like letters of reference designate correspondingparts in both gures.The object of my improvement is the construction of an automatic device,to be attached to a door, by

`which the latter will be retained in the open or partially-openpositionin which it may be placed.

The invention consists of a spring-arm pivoted to the door, near thebottom thereof, andcarrying a roller at its free end, which is caused torun upon the iioor, with a spring-pressure, and engage withastop-attachment secured to the door, so as to hold t-he door in an openposition. v

In the drawings, A is the yielding arm, 6 the roller, at its outer orfree end, which' is preferably made of India rubber, or its peripherycoated or encased in that or equivalent elastic material that willincrease its adherence to the floor, and tleaden or produce a noiselessoperation of the roller. The arm I prefer to pivot to a plate, c,provided with suitable ears for the purpose,` by which the device isreadily attached t o near the bottom of the door by screws, asrepresented. n It may, however, be pivoted in anyother proper mannerthatwill allow the free end the required vertical yielding. y

To insure the necessary contact and pressure of the roller upon thefloor, I prefer to employ a rubber spring, d, between projection a ofthe arm, and the plate c, or the door, which fully accomplishes thedesired result. i

A s iral s'uinfr arranfred in the same wav or a dii'erent arrancementand kind of s rino', ma. be em lo .ed

. P i e o .n o a a which will eifect the same purpose, i'or instance, aflat spring, with its end pressing on the arm outside of the pivot.

The pivoting ofthe arm permits the operating-end to rise in passing overinequalities in the door or carpet, while the spring causes the rollertomaintain a constant pressure on the iioor, suicient to retain the doorin whatever position it may be placed, the elastic`surface of the rollerpreventing sliding and any unpleasant noise from the operation of thedevice.

To form o stop, as well as to fasten the door when' that may be readilysecured to the` door, constructed with 'an incline, e, to guide' theroller into as'light depression, e', which locks the door open, whilethe elevated portion, e, serves as a stop, to prevent the door fromcoming in Contact with the wall. A Y

The advantages of my invention are too obvious to require furthermention.

What I claim as my invention is v Th'epivoted arm A, provided withroller b, in combination with the India-rubber spring d andstopattachment E, the whole constructed, arranged, and operating asshown and describecL JOHN K. CLARK.

` Witnesses:

E. A. VANOISE, H. H. flowrsnsn.`

it is-e'ntirely thrown open, I provide an attachment, E,

